This work considers covert communications with the aid of an intelligent reflecting surface
(IRS). We jointly design the transmit power and IRS's reflection phase shifts and amplitudes …

This letter investigates covert communication in an intelligent reflecting surface (IRS)-
assisted system. We propose a novel algorithm that jointly optimizes the transmission …

This work examines the performance gain achieved by deploying an intelligent reflecting
surface (IRS) in covert communications. To this end, we formulate the joint design of the …

With growing security threats to the evolving wireless systems, protecting user privacy
becomes progressively challenging. Even if the transmitted information is encrypted and the …

In this letter, a reconfigurable intelligent surface (RIS)-based passive covert communication
scheme is proposed, where source node Alice covertly transmits information to receiver Bob …

In this paper, the covert communication system with the assistance of an active intelligent
reflecting surface (IRS) is investigated. Unlike the conventional passive IRS, which reflects …

This letter considers the spatial correlation between the channels related to the warder and
receiver in an intelligent reflecting surface (IRS)-aided covert communication system. Based …

This article investigates the intelligent reflecting surface (IRS)-aided multi-antenna covert
communications. In particular, with the help of an IRS, a favorable communication …

This letter investigates the multi-input multi-output (MIMO) covert communication aided by
intelligent reflecting surface (IRS) against a multi-antenna warden. We establish a design …

Covert transmission is studied for an intelligent reflecting surface (IRS) aided communication
system, where Alice aims to transmit messages to Bob without being detected by the warden …